A simple random sample of 28 observations was taken from a large population. The sample mean equaled 50. Fifty is a _____.
A) population parameter
B) point estimator
C) sample parameter
D) point estimate

Question

Quizplus · Accepted Answer

Since 50 is a value calculated from the sample data, it is a point estimate, and therefore the correct answer is D. Population parameters are characteristics of the entire population, and sample parameters are characteristics of the sample. Point estimators are statistical methods used to estimate population parameters, but they are not actual values obtained from data.

A Simple Random Sample of 28 Observations Was Taken from a Large